BS ISO 19449-2015 Mopeds Measurement methods for gaseous exhaust emissions during inspection or maintenance《助力车 检验和维护中废气排放的测量方法》.pdf

1、BSI Standards PublicationBS ISO 19449:2015Mopeds Measurementmethods for gaseous exhaustemissions during inspection ormaintenanceBS ISO 19449:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 19449:2015.The UK participation in its preparation was entrusted to

2、 TechnicalCommittee AUE/14, Motor cycles and mopeds.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British S

3、tandards Institution 2015.Published by BSI Standards Limited 2015ISBN 978 0 580 85459 0ICS 13.040.50; 43.140Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 Dece

4、mber 2015.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dBS ISO 19449:2015 ISO 2015Mopeds Measurement methods for gaseous exhaust emissions during inspection or maintenanceMopeds Mthode de mesure des missions gazeuses au cours des inspections ou de la maintenanceINTERNATIO

5、NAL STANDARDISO19449First edition2015-12-01Reference numberISO 19449:2015(E)BS ISO 19449:2015ISO 19449:2015(E)ii ISO 2015 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2015, Published in SwitzerlandAll rights reserved. Unless otherwise specified, no part of this publication may be reproduced o

6、r utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester.ISO co

7、pyright officeCh. de Blandonnet 8 CP 401CH-1214 Vernier, Geneva, SwitzerlandTel. +41 22 749 01 11Fax +41 22 749 09 47copyrightiso.orgwww.iso.orgBS ISO 19449:2015ISO 19449:2015(E)Foreword ivIntroduction v1 Scope . 12 Normative references 13 Terms and definitions . 14 Instrumentation 15 Check, mainten

8、ance periodicity and precautions for use of instruments . 25.1 Check before use 25.2 Maintenance periodicity . 25.3 Precautions for use 26 General moped verification 27 Normal conditioning of moped 37.1 Warming up . 37.2 Test conditions 38 Gaseous exhaust emissions and corrections . 39 Measurement m

9、ethods for gaseous exhaust emissions 3Annex A (normative) Presentation of results 5Annex B (informative) Examples of gaseous exhaust emissions correction method. 7Bibliography 9 ISO 2015 All rights reserved iiiContents PageBS ISO 19449:2015ISO 19449:2015(E)ForewordISO (the International Organization

10、 for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has

11、the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The pro

12、cedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editor

13、ial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights

14、 identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents).Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explana

15、tion on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary informationThe committee responsible for this documen

16、t is ISO/TC 22, Road vehicles, Subcommittee SC 38, Motorcycles and mopeds.iv ISO 2015 All rights reservedBS ISO 19449:2015ISO 19449:2015(E)IntroductionThis International Standard specifies methods for the direct measurement of the concentration of gaseous exhaust emissions from mopeds during inspect

17、ions, official roadside checks or maintenance. Although ISO 3929 specifies methods for the direct measurement of the concentration of gaseous exhaust emissions from road vehicles, this International Standard is the adaptation of ISO 3929 to comply with needs specific to mopeds. ISO 2015 All rights r

18、eserved vBS ISO 19449:2015BS ISO 19449:2015Mopeds Measurement methods for gaseous exhaust emissions during inspection or maintenance1 ScopeThis International Standard specifies methods for the direct measurement of the concentration of gaseous exhaust emissions from mopeds as defined in ISO 3833 dur

19、ing inspection or maintenance. The results measured by this International Standard show the concentration of gaseous exhaust emissions in the no-load engine operating condition. It is applicable to mopeds having spark ignition engines (four-stroke engines or two-stroke engines). These methods can be

20、 used, either totally or partially, for periodic inspections in official garages, official roadside checks, and maintenance and diagnostic operations.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its applicat

21、ion. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO/PAS 39301), Instruments for measuring vehicle exhaust emissions Metrological and technical requirements; Metrological control and pe

22、rformance tests3 Terms and definitionsFor the purposes of this document, the following terms and definitions apply.3.1idling conditionno-load operating condition of engine warmed up in accordance with 7.1 with no manual operation with fuel system controls (throttle, choke, etc.), the gear in neutral

23、, and the manual clutch engaged for mopeds with the manual transmission, the parking condition for mopeds with the automatic transmission, and standard production equipment, accessories and optional equipment that modify the engine speed used in accordance with the manufacturers recommendations or r

24、egulatory requirementsNote 1 to entry: Automatically operated headlamps are standard production equipment. There is a possibility that headlamp operation influences the test results of gaseous exhaust emissions.3.2idling speedengine speed (range) specified by the manufacturer under the idling condit

25、ion.4 InstrumentationThe instruments listed below shall be prepared:1) Joint ISO/OIML (International Organization of Legal Metrology) document.INTERNATIONAL STANDARD ISO 19449:2015(E) ISO 2015 All rights reserved 1BS ISO 19449:2015ISO 19449:2015(E)4.1 Analyser, in accordance with ISO/PAS 3930, suita

26、ble for the concentrations of gaseous exhaust emissions from the mopeds under test,4.2 Surface temperature meter, with a measurement accuracy of at least 2 K between 323 K and 373 K,4.3 Pulse revolution counter, for measuring engine speed. The measurement accuracy shall be at least 20 min-1between 6

27、00 min-1and 2 000 min-1, and shall be at least 50 min-1between over 2 000 min-1and 6 000 min-1, and4.4 Ambient temperature meter, with a measurement accuracy of at least 2 K between 278 K and 313 K.5 Check, maintenance periodicity and precautions for use of instruments5.1 Check before useThe power s

28、upply to the instruments shall be in accordance with the manufacturers specifications.Check that the instruments are ready for testing in accordance with the manufacturers operating instructions, or at least, at the beginning of tests of a day, when the ambient conditions have changed, or at the beg

29、inning of tests at each new test site in the case of official roadside checks.For the analyser, the zero and span calibration check shall be performed with reference gases or using electronic or electromechanical methods (see ISO/PAS 3930).5.2 Maintenance periodicityAll periodical checks shall be ca

30、rried out in accordance with national regulations. If national regulations do not specify maintenance periodicity, those shall be carried out in accordance with manufacturers instructions.Maintenance shall be carried out in accordance with the manufacturers instructions. Operations shall be recorded

31、.5.3 Precautions for useThe working area shall be firm, horizontal surface. Ambient conditions shall be in accordance with ISO/PAS 3930.The working area shall not be directly exposed to rain, snow or sunlight, interfering vibration, a corrosive and/or polluted atmosphere that might influence the mea

32、surement results, or electromagnetic interference that might influence measurement results.6 General moped verificationThe exhaust system of the moped shall be leak-proof.2 ISO 2015 All rights reservedBS ISO 19449:2015ISO 19449:2015(E)7 Normal conditioning of moped7.1 Warming upThe moped shall be wa

33、rmed up in accordance with manufacturers specifications. If no warmed up condition is specified by the manufacturer, the moped shall be warmed up in accordance with following methods:a) for mopeds equipped with four-stroke engines, the surface temperature of head of lubrication oil drain bolt shall

34、be achieved between 328 K and 343 K by maintaining the engine speed between 3 000 min-1and 6 000 min-1. If the engine is over heated, the temperature may be adjusted with the external cooling fan under idling condition;b) for mopeds equipped with two-stroke engines, the moped shall be warmed up by r

35、unning at least 15 min or at least 5 km under normal urban traffic conditions.In case where the automatic choke is still on at the end of the warming up procedure, attention shall be paid in order to extend the warming up procedure to bring the automatic choke to switch off.7.2 Test conditionsThe ch

36、oke shall be non-operative or no longer operative.The moped shall be located on a substantially horizontal site.The sampling probe shall be inserted at least 600 mm into the exhaust outlet pipe. If the exhaust pipe shape does not allow such insertion, an extension exhaust pipe shall be provided.In t

37、he case of plural exhaust pipes, these shall be connected into a single outlet unless specified otherwise by the manufacturer. If this type of connection is not practicable, the arithmetic average of the concentration values, measured at each outlet, shall be adopted. In any case, the exhaust adapto

38、r used shall not influence engine running and measurement results.8 Gaseous exhaust emissions and correctionsThe gaseous exhaust emissions which are measured shall be in accordance with national requirements and the measured values shall be corrected in accordance with national requirements. Example

39、s of correction methods are described in Annex B. For the case of no national requirement, the correction method in B.2 is recommended.9 Measurement methods for gaseous exhaust emissions9.1 Warm up the moped in accordance with 7.1 and keep the idling condition.9.2 Equip the moped immediately with a

40、revolution counter, and an extension exhaust pipe, if necessary.9.3 Check that the engine speed measured at idling condition is within the manufacturers specification range (i.e. idling speed). If the engine speed is different from idling speed, adjust the engine speed to idling speed. If it is not

41、possible to meet the manufactures specification, the measurement may be continued. The measured idling speed shall be described in the test report.9.4 Select the highest analyser scale and put the analyser in measurement mode. ISO 2015 All rights reserved 3BS ISO 19449:2015ISO 19449:2015(E)9.5 Inser

42、t the probe into the exhaust pipe or its extension.9.6 Check that the appropriate scale has been selected and change if necessary.9.7 After at least 15 s from insertion of the probe, carry out the measurements over sufficient time but not exceeding 30 s to obtain minimum and maximum values. Calculat

43、e the arithmetic mean of these two values.9.8 If one step between 9.1 and 9.7 fails, repeat steps from 9.1 to 9.7.9.9 If all test procedures are successfully completed, the measured maximum, measured minimum and arithmetic mean values of gaseous exhaust emissions shall be described in the test repor

44、t in Annex A.4 ISO 2015 All rights reservedBS ISO 19449:2015ISO 19449:2015(E)Annex A (normative) Presentation of resultsA.1 MopedCategory: two wheeler/three wheeler (delete as applicable)Tradename (-mark): _Model: _Engine model: _Cycle: two stroke/four stroke (delete as applicable)Number and layout

45、of cylinders: _Engine displacement: _cm3Gear-box: manual/automatic (delete as applicable)Secondary air system: with/without (delete as applicable)Others, if there is any alternation: _A.2 Gaseous exhaust emissions analyserTradename (-mark): _Model: _A.3 Test conditionsClimate: _Test ambient temperat

46、ure: _KSurface temperature of head of lubrication oil drain bolt (for four-stroke engine only): _KA.4 Measurement resultsIdling speed specified by manufacturer: _min-1Measured engine speed: _min-1Measured minimum value Measured maximum value Arithmetic mean valueCOa: _vol. % _vol. % _vol. %HCab: _vol. ppm _vol. ppm _vol. ppm ISO 2015 All rights reserved 5BS ISO 19449:2015ISO 19449:2015(E)Only for an engine fitted with a secondary air system:Measured minimum value Measured maximum v